List<T>转DataTable

 

  public static class DataConvertor
    {
        public static DataTable ToDataTable<T>(IEnumerable<T> data)
        {
            PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(typeof(T));
            var table = new DataTable();
            foreach (PropertyDescriptor prop in properties)
                table.Columns.Add(prop.Name, Nullable.GetUnderlyingType(prop.PropertyType) ?? prop.PropertyType);
            foreach (T item in data)
            {
                DataRow row = table.NewRow();
                foreach (PropertyDescriptor prop in properties)
                    row[prop.Name] = prop.GetValue(item) ?? DBNull.Value;
                table.Rows.Add(row);
            }
            return table;
        }
        
        public static DataTable ToDataTable(IRfcTable rfcTable)
        {
            DataTable table = new DataTable();
            int liElement = 0;
            for (liElement = 0; liElement <= rfcTable.ElementCount - 1; liElement++)
            {
                RfcElementMetadata metadata = rfcTable.GetElementMetadata(liElement);
                table.Columns.Add(metadata.Name); //循环创建列
            }
            foreach (IRfcStructure dr in rfcTable) //循环table结构表
            {
                DataRow row = table.NewRow(); //创建新行
                for (liElement = 0; liElement <= rfcTable.ElementCount - 1; liElement++)
                {
                    RfcElementMetadata metadata = rfcTable.GetElementMetadata(liElement);
                    row[metadata.Name] = dr.GetString(metadata.Name).Trim();
                }
                table.Rows.Add(row);
            }

            return table;
        }
    }